Every alt coin increase in price when the time comes it is just matter of time, waiting for the coins to reach its estimated value. Choose a coin that has a low price but has a great project that will have such a high demand in the future so that it will increase its price just how it is estimated. For me I would invest in the top 10 coins because i can see that those coins has a good price and market value. Like ethereum, cardano and most likely bitcoin